Half-bridge converter switching power supply for magnetron
    1.
    发明授权
    Half-bridge converter switching power supply for magnetron 失效
    用于磁控管的半桥转换器开关电源

    公开(公告)号:US5321235A

    公开(公告)日:1994-06-14

    申请号:US891956

    申请日:1992-06-01

    IPC分类号: H02M3/337 H05B6/66 H05B6/68

    CPC分类号: H05B6/6432 H02M3/3376

    摘要: A power source apparatus for microwave oven includes a half-bridge converter including a series connection of switching elements, a series connection of resonance capacitors, and a high frequency transformer having a primary winding and a secondary winding, and the half-bridge converter is driven by an output of a diode bridge which receives a commercial power source of 200 V. A current transformer detects a current of the primary winding. A control circuit compares a voltage equal to an average value of the current detected by the current transformer and a voltage set by a microcomputer, and controls the switching elements at a frequency in proportion to a magnitude of a difference of the both voltages, whereby a high frequency high voltage is induced on the secondary winding and applied to a voltage doubler rectifying circuit, and then a direct current high voltage is applied to a magnetron.

    摘要翻译: 一种用于微波炉的电源设备包括半桥转换器,其包括开关元件的串联连接,谐振电容器的串联连接和具有初级绕组和次级绕组的高频变压器,并且驱动半桥转换器 通过接收200V的商用电源的二极管电桥的输出。电流互感器检测初级绕组的电流。 控制电路将电流互感器检测出的电流的平均值和由微型计算机设定的电压进行比较,并且以与两个电压的差的大小成正比的频率来控制开关元件,由此, 在次级绕组上感应出高频高压,施加到倍压整流电路,然后将直流高电压施加到磁控管。

    Power inverter for use in system interconnection
    2.
    发明授权
    Power inverter for use in system interconnection 失效
    电力变频器用于系统互连

    公开(公告)号:US5627737A

    公开(公告)日:1997-05-06

    申请号:US304948

    申请日:1994-09-13

    IPC分类号: H02J3/06 H02M7/5387 H02M1/12

    摘要: A power inverter for use in the system interconnection of a direct-current supply with a commercial alternating-current supply includes an inverter circuit and a filter circuit. Feedback signals affecting the frequency of an output to be produced by the inverter circuit are taken from the filter circuit having frequency response characteristics such that the phase angle is reduced to 0.degree. at three frequencies consisting of a higher frequency, lower frequency and commercial frequency, the last of which lies halfway between the first and second. Under the normal condition, the frequency of the output produced by the inverter circuit is equal to the commercial frequency. In the event of a power failure or power cut in the commercial alternating-current supply system, deviation from the commercial frequency is caused by the characteristics of the filter circuit.

    摘要翻译: 用于直流电源与商用交流电源的系统互连的电力逆变器包括逆变器电路和滤波电路。 影响由逆变器电路产生的输出频率的反馈信号取自具有频率响应特性的滤波器电路,使得相位角在由较高频率,较低频率和商业频率组成的三个频率处降低到0°, 最后一个位于第一和第二之间的中间位置。 在正常情况下,由逆变电路产生的输出频率等于商用频率。 在商用交流供电系统发生电源故障或断电的情况下,与商用频率的偏差由滤波电路的特性引起。

    Interconnected generator system
    3.
    发明申请
    Interconnected generator system 审中-公开
    互连发电机系统

    公开(公告)号:US20060131962A1

    公开(公告)日:2006-06-22

    申请号:US11311807

    申请日:2005-12-19

    IPC分类号: H01H47/26

    摘要: An interconnected generator system comprises: a DC power generator means; an inverter circuit operative to convert the DC power from the DC power generator means into AC power; a current smoothing circuit including a condenser and operative to smooth the AC power converted at the inverter circuit; and a system open/close relay operative to connect the current smoothing circuit to an AC power system in an open/close-switchable manner. A bypass circuit is provided to bypass the system open/close relay to connect the current smoothing circuit to the AC power system. The bypass circuit breaks the flow through the bypass circuit when a bypass open/close relay is opened and connects the current smoothing circuit to the AC power system via a positive thermistor when the bypass open/close relay is closed.

    摘要翻译: 互连的发电机系统包括:直流发电机装置; 逆变器电路,用于将来自直流发电机装置的直流电力转换成交流电; 包括电容器的电流平滑电路,用于平滑在逆变器电路处转换的AC电力; 以及系统开/关继电器,用于将电流平滑电路以开/关可切换的方式连接到AC电力系统。 旁路电路用于旁路系统开/关继电器,将电流平滑电路连接到交流电源系统。 当旁路开/关继电器断开时,旁路电路会断开通过旁路回路的流量,当旁路开/关继电器闭合时,通过正热敏电阻将电流平滑电路连接到交流电源系统。

    System interconnection electric power generator and control method therefor
    4.
    发明授权
    System interconnection electric power generator and control method therefor 有权
    系统互联发电机及其控制方法

    公开(公告)号:US06809942B2

    公开(公告)日:2004-10-26

    申请号:US10179325

    申请日:2002-06-24

    IPC分类号: H02M324

    摘要: In a solar energy generator including a solar battery a microcomputer for controlling at least a boosting circuit and an inverter circuit so that AC power suitably usable as the AC power of a commercial power supply system can be supplied to the commercial power supply system, the power to be supplied to the various kinds of equipment of the solar energy generator is selectively supplied from one of the solar battery and the commercial power supply system. The microcomputer stores the operational status data of the solar energy generator into an external storage device, and these data can be used for maintenance or trouble shooting of the solar energy generator.

    摘要翻译: 在包括太阳能电池的太阳能发电机中,至少用于控制升压电路的微型计算机和逆变器电路,使得能够将适合用作商用电源系统的交流电的交流电力供给到商用电源系统, 从太阳能电池和商用电源系统之一选择性地供给太阳能发电机的各种设备。 微型计算机将太阳能发电机的运行状态数据存储到外部存储装置中,并且这些数据可用于太阳能发电机的维护或故障排除。

    Method of operating a power supply system having parallel-connected inverters, and power converting system
    6.
    发明授权
    Method of operating a power supply system having parallel-connected inverters, and power converting system 有权
    具有并联逆变器的电源系统的操作方法以及电力转换系统

    公开(公告)号:US06285572B1

    公开(公告)日:2001-09-04

    申请号:US09514767

    申请日:2000-02-28

    IPC分类号: H02M700

    摘要: A method whereby a plurality of inverters for converting DC power outputted from a DC power supply, such as solar cells or fuel cells, to AC power are operated efficiently without being biased to particular inverters. The number of inverters to be run is determined in correspondence with at least one output value of the DC output or AC output, and the determined number of inverters are selected and made to run from among the plurality of inverters on the basis of a predetermined rule. In addition, a parallel-connected system is disclosed for enabling efficient and appropriate parallel-in operation by the use of inverters, with one of the inverters controlling the remaining inverters and effecting system interconnection protection.

    摘要翻译: 将用于将从诸如太阳能电池或燃料电池的直流电源输出的直流电力转换为交流电力的多个逆变器的方法被有效地操作而不偏向特定的逆变器。 根据直流输出或交流输出的至少一个输出值确定要运行的反相器的数量,并且基于预定规则从多个逆变器中选择并使其确定的反相器数量运行 。 此外,公开了一种并联系统,用于通过使用逆变器实现有效和适当的并行操作,其中一个逆变器控制剩余的逆变器并实现系统互连保护。

    Zero current switching DC-DC converter incorporating a tapped resonant
inductor
    7.
    发明授权
    Zero current switching DC-DC converter incorporating a tapped resonant inductor 失效
    并联谐振电感器的零电流开关DC-DC转换器

    公开(公告)号:US5327334A

    公开(公告)日:1994-07-05

    申请号:US28134

    申请日:1993-03-09

    IPC分类号: H02M3/28 H02M3/335

    CPC分类号: H02M3/335 Y02B70/1433

    摘要: A current resonance DC-DC converter has a ZCS resonance switch circuit which comprises a semiconductor switch device 7 and a diode 8 connected together into a parallel circuit, the diode 8 being connected at its cathode to one end of a DC power supply 1, a center-tapped resonance inductance 13 adapted to produce voltages of the same polarity across the center tap and its respective opposite ends and connected at its resonance side to the anode of the diode 8, and a resonance capacitor 6 connected to the center tap of the resonance inductance 13 and to the above-mentioned one end of the power supply 1, the resonance inductance 13 being connected at a transformerside terminal thereof to one end of the primary inductance 4 of a high-frequency transformer HT, the other end of the primary inductance 4 being connected to the other end of the power supply 1.

    摘要翻译: 电流谐振DC-DC转换器具有ZCS谐振开关电路,该ZCS谐振开关电路包括半导体开关器件7和连接在一起的并联电路的二极管8,二极管8的阴极连接到直流电源1的一端, 中心抽头谐振电感13适于在中心抽头及其相应的相对端产生具有相同极性的电压,并在其谐振侧连接到二极管8的阳极;以及谐振电容器6,其连接到谐振的中心抽头 电感13和电源1的上述一端,谐振电感13在其变压器端连接到高频变压器HT的初级电感4的一端,初级电感的另一端 4连接到电源1的另一端。

    Good aesthetic artificial dental materials by calcium phosphate
glass-ceramic
    8.
    发明授权
    Good aesthetic artificial dental materials by calcium phosphate glass-ceramic 失效
    好的美容人造牙科材料采用磷酸钙玻璃陶瓷

    公开(公告)号:US4626514A

    公开(公告)日:1986-12-02

    申请号:US844893

    申请日:1986-03-27

    摘要: Dental materials using calcium phosphate glass-ceramics and having the color tone with high approximation to that of natural teeth. In those dental materials, calcium phosphate composite, nickel oxide and one or more other type of compounds selected from oxides of iron, manganese, cerium, titanium and tungsten, are contained as coloring component. Also, if necessary, Al.sub.2 O.sub.3 and/or SiO.sub.2 is contained as a color assisting agent in that composite. The calcium phosphate glass-ceramic according to this invention consists of the same components as that of natural teeth. Besides, it is possible to adjust the color tone delicately to match with the color tone of each individual`s teeth. Moreover, the coloring components are incorporated in crystals of calcium phosphate. Consequently, they cause no elution during use and are therefore ideal as dental material.

    摘要翻译: 使用磷酸钙玻璃陶瓷的牙科材料,并具有与天然牙齿近似的色调。 在这些牙科材料中,含有选自铁,锰,铈,钛和钨的氧化物的磷酸钙复合物,氧化镍和一种或多种其它类型的化合物作为着色成分。 此外,如果需要,在该复合物中含有Al 2 O 3和/或SiO 2作为着色助剂。 根据本发明的磷酸钙玻璃陶瓷由与天然牙齿相同的组分组成。 此外,可以调整色调以适应每个人牙齿的色调。 此外,着色成分掺入磷酸钙晶体中。 因此,它们在使用过程中不会溶出,因此是理想的牙科材料。

    Controlling device of compressor
    9.
    发明授权
    Controlling device of compressor 有权
    压缩机控制装置

    公开(公告)号:US06781802B2

    公开(公告)日:2004-08-24

    申请号:US10065090

    申请日:2002-09-16

    IPC分类号: H02H700

    CPC分类号: H02M5/458 H02M1/126

    摘要: A controlling device of a compressor is provided. A noise filter is arranged at an input of the inverter circuit that converts the commercial frequency to a driving frequency to control a motor driving a compressor mechanism, for suppressing a common mode noise of the commercial power source and the inverter circuit, and is connected to a ground through a metal frame used for receiving a compressor main body. The noise filter comprises coils connected between first capacitors and second capacitors that are connected in series between the AC power lines, and further comprises a clamper connected between nodes of the second capacitors and the metal frame for clamping a voltage and a third capacitor connected to the clamper in parallel. even though the new refrigerant, such as R410A, and the three-phase AC power source are used, the leakage current can be reduced by a simple structure and the increase of the noise terminal voltage can be also suppressed. Furthermore, both of the legal regulation requirements can be met.

    摘要翻译: 提供压缩机的控制装置。 噪声滤波器设置在逆变器电路的输入端,其将商用频率转换为驱动频率,以控制驱动压缩机构的电动机,以抑制商用电源和逆变器电路的共模噪声,并连接到 通过用于接收压缩机主体的金属框架的接地。 噪声滤波器包括连接在串联在AC电力线之间的第一电容器和第二电容器之间的线圈,并且还包括连接在第二电容器的节点和用于钳位电压的金属框架之间的钳位器,以及连接到 夹持器并联。 即使使用R410A,三相交流电源等新的制冷剂,也可以通过简单的结构来降低泄漏电流,能够抑制噪声端子电压的上升。 此外,法律规定的要求都可以满足。